This is a new d3-based charting library, d2b.js (Data to DashBoards). It is built using d3v4's module pattern with rollup.js as a build tool.
The build is stable but there is still work being done on the wiki and additional tests are still being added. D2B currently supports axis-charts, pie-charts, and sunburst-charts. More charts and features will be added in the future after the current build is ready for a 1.x.x release.